466 lines
9.3 KiB
C
466 lines
9.3 KiB
C
/* $NetBSD: fsck.c,v 1.2 1996/09/23 16:11:34 christos Exp $ */
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/*
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* Copyright (c) 1996 Christos Zoulas. All rights reserved.
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* Copyright (c) 1980, 1989, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* From: @(#)mount.c 8.19 (Berkeley) 4/19/94
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* From: NetBSD: mount.c,v 1.24 1995/11/18 03:34:29 cgd Exp
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*
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*/
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static char rcsid[] = "$NetBSD: fsck.c,v 1.2 1996/09/23 16:11:34 christos Exp $";
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#include <sys/param.h>
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#include <sys/mount.h>
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#include <sys/queue.h>
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#include <sys/wait.h>
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#include <err.h>
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#include <errno.h>
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#include <fstab.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "pathnames.h"
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#include "extern.h"
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#include "util.h"
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static enum { IN_LIST, NOT_IN_LIST } which = NOT_IN_LIST;
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TAILQ_HEAD(fstypelist, entry) opthead, selhead;
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struct entry {
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char *type;
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char *options;
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TAILQ_ENTRY(entry) entries;
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};
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static int preen = 0, maxrun = 0;
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int debug = 0, verbose = 0;
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static char *options = NULL;
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int main __P((int, char *[]));
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static int checkfs __P((const char *, const char *, pid_t *));
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static int selected __P((const char *));
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static void addoption __P((char *));
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static const char *getoptions __P((const char *));
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static void addentry __P((struct fstypelist *, const char *, const char *));
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static void maketypelist __P((char *));
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static char *catopt __P((char *, const char *, int));
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static void mangle __P((char *, int *, const char **));
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static void usage __P((void));
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static int isok __P((struct fstab *));
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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struct fstab *fs;
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int i, rval = 0;
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char *vfstype = NULL;
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TAILQ_INIT(&selhead);
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TAILQ_INIT(&opthead);
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while ((i = getopt(argc, argv, "dvpnyl:t:T:")) != -1)
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switch (i) {
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#ifdef DEBUG
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# define DEBUGOPT "d"
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case 'd':
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debug++;
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break;
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#else
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# define DEBUGOPT ""
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#endif
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case 'v':
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verbose++;
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break;
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case 'y':
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options = catopt(options, "-y", 1);
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break;
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case 'l':
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maxrun = atoi(optarg);
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break;
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case 'n':
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options = catopt(options, "-n", 1);
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break;
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case 'T':
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if (*optarg)
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addoption(optarg);
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break;
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case 't':
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if (selhead.tqh_first != NULL)
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errx(1, "only one -t option may be specified.");
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maketypelist(optarg);
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vfstype = optarg;
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break;
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case 'p':
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options = catopt(options, "-p", 1);
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preen++;
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break;
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case '?':
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default:
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usage();
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/* NOTREACHED */
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}
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argc -= optind;
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argv += optind;
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if (argc == 0)
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return checkfstab(preen, maxrun, isok, checkfs);
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#define BADTYPE(type) \
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(strcmp(type, FSTAB_RO) && \
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strcmp(type, FSTAB_RW) && strcmp(type, FSTAB_RQ))
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for (; argc--; argv++) {
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char *spec, *type;
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if ((fs = getfsfile(*argv)) == NULL &&
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(fs = getfsspec(*argv)) == NULL) {
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if (vfstype == NULL)
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errx(1,
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"%s: unknown special file or file system.",
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*argv);
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spec = *argv;
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type = vfstype;
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}
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else {
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spec = fs->fs_spec;
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type = fs->fs_vfstype;
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if (BADTYPE(fs->fs_type))
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errx(1, "%s has unknown file system type.",
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*argv);
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}
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rval |= checkfs(type, blockcheck(spec), NULL);
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}
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return rval;
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}
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static int
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isok(fs)
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struct fstab *fs;
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{
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if (fs->fs_passno == 0)
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return 0;
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if (BADTYPE(fs->fs_type))
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return 0;
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if (!selected(fs->fs_vfstype))
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return 0;
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return 1;
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}
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static int
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checkfs(vfstype, spec, pidp)
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const char *vfstype, *spec;
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pid_t *pidp;
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{
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/* List of directories containing fsck_xxx subcommands. */
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static const char *edirs[] = {
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_PATH_SBIN,
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_PATH_USRSBIN,
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NULL
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};
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const char *argv[100], **edir;
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pid_t pid;
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int argc, i, status;
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char *optbuf = NULL, execname[MAXPATHLEN + 1];
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const char *extra = getoptions(vfstype);
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#ifdef __GNUC__
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/* Avoid vfork clobbering */
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(void) &optbuf;
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#endif
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argc = 0;
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argv[argc++] = vfstype;
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if (options) {
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if (extra != NULL)
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optbuf = catopt(options, extra, 0);
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else
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optbuf = estrdup(options);
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}
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else if (extra)
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optbuf = estrdup(extra);
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if (optbuf)
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mangle(optbuf, &argc, argv);
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argv[argc++] = spec;
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if (debug || verbose) {
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(void)printf("start %swait fsck_%s", vfstype,
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pidp ? "no" : "");
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for (i = 1; i < argc; i++)
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(void)printf(" %s", argv[i]);
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(void)printf("\n");
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}
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switch (pid = vfork()) {
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case -1: /* Error. */
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warn("vfork");
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if (optbuf)
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free(optbuf);
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return (1);
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case 0: /* Child. */
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#ifdef DEBUG
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if (debug)
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_exit(0);
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#endif
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/* Go find an executable. */
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edir = edirs;
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do {
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(void)snprintf(execname,
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sizeof(execname), "%s/fsck_%s", *edir, vfstype);
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execv(execname, (char * const *)argv);
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if (errno != ENOENT)
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if (spec)
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warn("exec %s for %s", execname, spec);
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else
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warn("exec %s", execname);
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} while (*++edir != NULL);
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if (errno == ENOENT)
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if (spec)
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warn("exec %s for %s", execname, spec);
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else
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warn("exec %s", execname);
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exit(1);
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/* NOTREACHED */
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default: /* Parent. */
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if (optbuf)
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free(optbuf);
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if (pidp) {
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*pidp = pid;
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return 0;
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}
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if (waitpid(pid, &status, 0) < 0) {
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warn("waitpid");
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return (1);
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}
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if (WIFEXITED(status)) {
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if (WEXITSTATUS(status) != 0)
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return (WEXITSTATUS(status));
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}
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else if (WIFSIGNALED(status)) {
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warnx("%s: %s", spec, strsignal(WTERMSIG(status)));
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return (1);
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}
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break;
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}
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return (0);
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}
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static int
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selected(type)
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const char *type;
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{
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struct entry *e;
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/* If no type specified, it's always selected. */
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for (e = selhead.tqh_first; e != NULL; e = e->entries.tqe_next)
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if (!strncmp(e->type, type, MFSNAMELEN))
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return which == IN_LIST ? 1 : 0;
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return which == IN_LIST ? 0 : 1;
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}
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static const char *
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getoptions(type)
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const char *type;
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{
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struct entry *e;
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for (e = opthead.tqh_first; e != NULL; e = e->entries.tqe_next)
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if (!strncmp(e->type, type, MFSNAMELEN))
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return e->options;
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return "";
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}
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static void
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addoption(optstr)
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char *optstr;
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{
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char *newoptions;
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struct entry *e;
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if ((newoptions = strchr(optstr, ':')) == NULL)
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errx(1, "Invalid option string");
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*newoptions++ = '\0';
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for (e = opthead.tqh_first; e != NULL; e = e->entries.tqe_next)
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if (!strncmp(e->type, optstr, MFSNAMELEN)) {
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e->options = catopt(e->options, newoptions, 1);
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return;
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}
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addentry(&opthead, optstr, newoptions);
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}
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static void
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addentry(list, type, opts)
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struct fstypelist *list;
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const char *type;
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const char *opts;
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{
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struct entry *e;
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e = emalloc(sizeof(struct entry));
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e->type = estrdup(type);
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e->options = estrdup(opts);
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TAILQ_INSERT_TAIL(list, e, entries);
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}
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static void
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maketypelist(fslist)
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char *fslist;
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{
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char *ptr;
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if ((fslist == NULL) || (fslist[0] == '\0'))
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errx(1, "empty type list");
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if (fslist[0] == 'n' && fslist[1] == 'o') {
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fslist += 2;
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which = NOT_IN_LIST;
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}
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else
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which = IN_LIST;
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while ((ptr = strsep(&fslist, ",")) != NULL)
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addentry(&selhead, ptr, "");
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}
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static char *
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catopt(s0, s1, fr)
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char *s0;
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const char *s1;
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int fr;
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{
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size_t i;
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char *cp;
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if (s0 && *s0) {
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i = strlen(s0) + strlen(s1) + 1 + 1;
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cp = emalloc(i);
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(void)snprintf(cp, i, "%s,%s", s0, s1);
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}
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else
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cp = estrdup(s1);
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if (s0 && fr)
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free(s0);
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return (cp);
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}
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static void
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mangle(opts, argcp, argv)
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char *opts;
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int *argcp;
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const char **argv;
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{
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char *p, *s;
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int argc;
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argc = *argcp;
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for (s = opts; (p = strsep(&s, ",")) != NULL;)
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if (*p != '\0')
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if (*p == '-') {
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argv[argc++] = p;
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p = strchr(p, '=');
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if (p) {
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*p = '\0';
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argv[argc++] = p+1;
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}
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}
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else {
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argv[argc++] = "-o";
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argv[argc++] = p;
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}
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*argcp = argc;
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}
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static void
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usage()
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{
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extern char *__progname;
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static const char common[] =
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"pvlyn] [-T fstype:fsoptions] [-t fstype]";
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(void)fprintf(stderr, "Usage: %s [-%s%s [special|node]...\n",
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__progname, DEBUGOPT, common);
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exit(1);
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}
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